Home / 210,623.80-315,935.70-52,857.40

Finding the Fourth Proportional to 210,623.80, 315,935.70 and 52,857.40

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Solution

The fourth proportional to 210,623.80, 315,935.70 and 52,857.40 is: 79,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,623.80 : 315,935.70 = 52,857.40 : x
  2. Step 2: Convert to fraction form
    210,623.80/315,935.70 = 52,857.40/x
  3. Step 3: Cross multiply
    210,623.80x = 315,935.70 × 52,857.40
  4. Step 4: Simplify right side
    210,623.80x = 16,699,539,669.18
  5. Step 5: Solve for x
    x = 16,699,539,669.18/210,623.80
  6. Step 6: Final answer
    x = 79,286.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.